off guard

Caught by surprise

Unprepared or unsuspecting, especially when surprised by something unexpected.

To catch someone off guard is to surprise them when they're not ready: The question caught me off guard.

To be off guard is to have your defenses down, whether literally or figuratively.

The opposite is on guard.

surprise

caught

Seized or grabbed

shocked · stunned · jolted · astonished · taken aback · floored · gobsmacked · thunderstruck · flabbergasted · dumbfounded

unprepared

unready

Not yet prepared

napping · flat-footed · sleeping · distracted · oblivious · inattentive · careless · negligent · lulled · complacent

vulnerable

exposed

Out in open

susceptible · unshielded · undefended · weak · helpless · at risk · compromised · disarmed · wide open · sitting duck

relaxed

at ease

Relaxed, not tense

mellow · loose · casual · settled · chilled · laid-back · leisurely · decompressing · trusting · unsuspicious

Categories
Opposites
readiness/alertness

off guardon guard

Alert and watchful

alert · vigilant · on one's guard · prepared · ready

defensive posture

off guardguarded

Wary and restrained

defended · protected · fortified · shielded · covered

expectation/anticipation

off guardforewarned

Notified of coming trouble

expecting · anticipating · unsurprised · knowing · clued in

Family

off, guard, guarded, guardian, unguarded, on guard, unawares, guardianship, guardedly

Familiarity
Top 20,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G